Knights Foundry

Casting Materials & Alloy Grades

Knights Foundry pours aluminium and a broad range of ferrous casting materials in Wadeville, Gauteng, including high-chromium white iron, Ni-Resist irons, grey and SG irons, carbon and low-alloy steels, austenitic manganese steel, stainless steels including duplex and heat-resistant grades, and specialised nickel-base alloys.

The grades below reflect the material and specification schedule supplied by Knights Foundry. Legacy and cross-standard designations grouped on one line are procurement/search cross-references by material or property family, not a declaration that the standards are technically interchangeable. Parenthetical wrought/common alloy designations are provided as industry cross-references only and do not imply identical chemistry, properties or specification requirements. Final material selection, chemistry, heat treatment, test-bar requirements and acceptance criteria remain controlled by the applicable customer specification.

Abrasion-Resistant White Cast Irons

Specification Group

ASTM A532 Abrasion-Resistant Cast Irons

10 grades
  • ASTM A532 Class III Type A
  • ASTM A532 Class II Type A
  • ASTM A532 Class II Type B
  • ASTM A532 Class II Type C
  • ASTM A532 Class II Type D
  • ASTM A532 Class II Type E
  • ASTM A532 Class I Type A
  • ASTM A532 Class I Type B
  • ASTM A532 Class I Type C
  • ASTM A532 Class I Type D
Specification Group

BS 4844:1986 High-Chromium Abrasion-Resistant Cast Irons

6 grades
  • BS 4844:1986 Grade 2D
  • BS 4844:1986 Grade 3A
  • BS 4844:1986 Grade 3B
  • BS 4844:1986 Grade 3C
  • BS 4844:1986 Grade 3D
  • BS 4844:1986 Grade 3E
Specification Group

High-Chromium Wear Irons by Chromium Content

5 grades
  • 12% chromium white iron (Cr12)
  • 15% chromium white iron (Cr15)
  • 27% chromium white iron (Cr27 / AR27)
    ASTM A532 Class III Type A
  • 35% chromium white iron (Cr35)
  • GX130Cr
    DIN high-chromium white iron designation
Specification Group

Ni-Hard Abrasion-Resistant Cast Irons

4 grades
  • Ni-Hard 1 (Ni-Hard Type 1 / NH1)
    ASTM A532 Class I Type A
  • Ni-Hard 2 (Ni-Hard Type 2)
    ASTM A532 Class I Type B
  • Ni-Hard 3 (Ni-Hard Type 3)
    ASTM A532 Class I Type C
  • Ni-Hard 4 (Ni-Hard Type 4)
    ASTM A532 Class I Type D

Aluminium / Aluminum Casting Alloys

Specification Group

BS 1490 LM Series Aluminium Casting Alloys

3 grades
  • BS 1490 LM4
  • BS 1490 LM6
  • BS 1490 LM12

Austenitic Ductile / Spheroidal-Graphite Cast Irons (Ni-Resist)

Specification Group

ASTM A439 Ni-Resist Types

5 grades
  • ASTM A439 Ni-Resist Type D-2
  • ASTM A439 Ni-Resist Type D-2B
  • ASTM A439 Ni-Resist Type D-3
  • ASTM A439 Ni-Resist Type D-5
  • ASTM A439 Ni-Resist Type D-5B

Austenitic Grey / Flake-Graphite Cast Irons (Ni-Resist)

Specification Group

ASTM A436 Ni-Resist Types

6 grades
  • ASTM A436 Ni-Resist Type 1
  • ASTM A436 Ni-Resist Type 1b
  • ASTM A436 Ni-Resist Type 2
  • ASTM A436 Ni-Resist Type 2b
  • ASTM A436 Ni-Resist Type 3
  • ASTM A436 Ni-Resist Type 4

Austenitic Manganese Cast Steels

Specification Group

ASTM A128 Hadfield Austenitic Manganese Steel Grades

7 grades
  • ASTM A128 Grade A
  • ASTM A128 Grade B-1
  • ASTM A128 Grade B-2
  • ASTM A128 Grade B-3
  • ASTM A128 Grade B-4
  • ASTM A128 Grade C
  • ASTM A128 Grade E-2
Specification Group

EN 10293 Austenitic Manganese Cast Steels

1 grade
  • GX120Mn12
    X120Mn12 (Material 1.3401)
    ASTM A128 Grade B-3
    European Hadfield manganese cast steel
Specification Group

High-Manganese Wear Grades

3 grades
  • 12% manganese austenitic cast steel (Mn12)
    ASTM A128 Grade A
    standard Hadfield wear grade
  • 18% manganese austenitic cast steel (Mn18)
    ASTM A128 Grade E-2
    high work-hardening wear grade
  • 28% manganese austenitic cast steel (Mn28)

Carbon and Carbon-Manganese Cast Steels

Specification Group

BS 3100:1991 Carbon / Carbon-Manganese Grades

5 grades
  • BS 3100:1991 Grade A1
    ASTM A27 Grade U-60-30 (415-205)
    ASTM A27 Grade 60-30 (415-205)
    ASTM A216 Grade WCA
  • BS 3100:1991 Grade A2
    ASTM A27 Grade 70-36 (485-250)
    ASTM A27 Grade 70-40 (485-275)
    ASTM A216 Grade WCB
  • BS 3100:1991 Grade A3
    ASTM A148 Grade 80-40
  • BS 3100:1991 Grade A4
    ASTM A216 Grade WCC
  • BS 3100:1991 Grade A5
    ASTM A148 Grade 90-60
Specification Group

ASTM A27 / A27M Carbon Steel Castings

7 grades
  • ASTM A27 Grade 60-30
    415-205
  • ASTM A27 Grade 65-35
    450-240
    DIN 1681:1985 Grade GS-45
  • ASTM A27 Grade 70-36
    485-250
  • ASTM A27 Grade 70-40
    485-275
  • ASTM A27 Grade N-1
  • ASTM A27 Grade N-2
  • ASTM A27 Grade U-60-30
    415-205
Specification Group

ASTM A216 / A216M High-Temperature Carbon Steel Castings

3 grades
  • ASTM A216 Grade WCA
    BS 3100:1991 Grade A1
  • ASTM A216 Grade WCB
    BS 3100:1991 Grade A2
  • ASTM A216 Grade WCC
    BS 3100:1991 Grade A4
Specification Group

ASTM A958 / A958M Carbon Steel Castings

7 grades
  • ASTM A958 Grade SC1010 Class 70/36
  • ASTM A958 Grade SC1020 Class 65/35
  • ASTM A958 Grade SC1020 Class 70/36
  • ASTM A958 Grade SC1025 Class 65/35
  • ASTM A958 Grade SC1025 Class 70/36
  • ASTM A958 Grade SC1030 Class 65/35
  • ASTM A958 Grade SC1030 Class 70/36
Specification Group

GS-Series and G-Series Cast Steel Designations

6 grades
  • G20Mn5 (Material 1.6220) cast steel
  • G40Mn5 (GS-40Mn5) carbon-manganese cast steel
  • GS-32 carbon cast steel
  • GS-42 carbon cast steel
  • GS-45
    DIN 1681:1985
    ASTM A27 Grade 65-35
  • GS-60 carbon cast steel
Specification Group

EN 10293 Non-Alloy Cast Steels

1 grade
  • GE300 (Material 1.0558)
Specification Group

Related Carbon Steel Casting Specifications

1 grade
  • ASTM A1001
    high-strength steel castings in heavy sections

Carbon Cast Steels for Wear and Surface Hardening

Specification Group

BS 3100:1991 Wear / Surface-Hardening Grades

2 grades
  • BS 3100:1991 Grade AW2
  • BS 3100:1991 Grade AW3

Ductile / Spheroidal-Graphite Cast Irons

Specification Group

ASTM A536 / SABS 936 Grades

5 grades
  • ASTM A536 Grade 60-40-18
    EN-GJS-400-18
    SABS 936-1969 Grade SG38
    BS 2789:1985 Grade 400/18
  • ASTM A536 Grade 65-45-12
    EN-GJS-450-10
    SABS 936-1969 Grade SG42
    BS 2789:1985 Grade 450/10
  • ASTM A536 Grade 80-55-06
    EN-GJS-500-7
    SABS 936-1969 Grade SG50
    BS 2789:1985 Grade 500/7
  • ASTM A536 Grade 80-60-03
    EN-GJS-600-3
    SABS 936-1969 Grade SG60
    BS 2789:1985 Grade 600/3
  • ASTM A536 Grade 100-70-03
    EN-GJS-700-2
    SABS 936-1969 Grade SG70
    BS 2789:1985 Grade 700/2
Specification Group

BS EN 1563 EN-GJS Grades

7 grades
  • EN-GJS-350 Series
    BS 2789:1985 Grade 350/22
    EN-GJS-350-22
  • EN-GJS-400 Series
    SABS 936-1969 Grade SG38
    ASTM A536 Grade 60-40-18
    EN-GJS-400-18
    BS 2789:1985 Grade 400/18
  • EN-GJS-450 Series
    SABS 936-1969 Grade SG42
    ASTM A536 Grade 65-45-12
    EN-GJS-450-10
    BS 2789:1985 Grade 450/10
  • EN-GJS-500-7
    SABS 936-1969 Grade SG50
    ASTM A536 Grade 80-55-06
    BS 2789:1985 Grade 500/7
  • EN-GJS-600 Series
    SABS 936-1969 Grade SG60
    ASTM A536 Grade 80-60-03
    EN-GJS-600-3
    BS 2789:1985 Grade 600/3
  • EN-GJS-700 Series
    SABS 936-1969 Grade SG70
    ASTM A536 Grade 100-70-03
    EN-GJS-700-2
    BS 2789:1985 Grade 700/2
  • EN-GJS-800 Series
    SABS 936-1969 Grade SG80
    EN-GJS-800-2

Flake-Graphite Grey Cast Irons

Specification Group

BS 1452:1990 Grades

6 grades
  • BS 1452:1990 Grade 150
    DIN 1691 GG-15 (GG15)
    ASTM A48-94a Class 20
    ASTM A48M-94e1 Class 150
    EN-GJL-150
  • BS 1452:1990 Grade 180
    DIN 1691 GG-20 (GG20)
    ASTM A48-94a Class 25
    ASTM A48M-94e1 Class 175
  • BS 1452:1990 Grade 220
    DIN 1691 GG-20 (GG20)
    ASTM A48-94a Class 30
    ASTM A48M-94e1 Class 225
    EN-GJL-200
  • BS 1452:1990 Grade 250
    DIN 1691 GG-25 (GG25)
    ASTM A48-94a Class 35
    ASTM A48M-94e1 Class 250
    EN-GJL-250
  • BS 1452:1990 Grade 300
    DIN 1691 GG-30 (GG30)
    ASTM A48-94a Class 45
    ASTM A48M-94e1 Class 300
    EN-GJL-300
  • BS 1452:1990 Grade 350
    DIN 1691 GG-35 (GG35)
    ASTM A48-94a Class 50
    ASTM A48M-94e1 Class 350
    EN-GJL-350
Specification Group

Legacy / Superseded BS 1452:1961 Designations

1 grade
  • BS 1452:1961 Grade 17 (CI Gr17)
    nearest current grade BS 1452:1990 Grade 250

High-Strength Cast Steels

Specification Group

ASTM A148 / A148M High-Strength Steel Castings

2 grades
  • ASTM A148 Grade 80-40
    BS 3100:1991 Grade A3
  • ASTM A148 Grade 90-60
    BS 3100:1991 Grade A5
Specification Group

BS 3100:1991 High-Tensile Grades

3 grades
  • BS 3100:1991 Grade BT1
  • BS 3100:1991 Grade BT2
  • BS 3100:1991 Grade BT3
Specification Group

EN 10293 Quenched and Tempered Alloy Cast Steels

3 grades
  • G34CrMo4 quenched and tempered cast steel
  • G35CrNiMo6-6 (Material 1.6579) nickel-chromium-molybdenum cast steel
  • G42CrMo4 (cast 42CrMo4) quenched and tempered alloy steel
Specification Group

Wrought-Equivalent Chemistries Poured to Order (BS 970 / EN Series)

9 grades
  • 34NiCrMo6 (Material 1.6582) nickel-chromium-molybdenum chemistry
  • 820M17 case-hardening nickel-chromium-molybdenum chemistry
  • C55 (Material 1.0535) medium-carbon chemistry
  • EN8 (080M40) medium-carbon chemistry
  • EN14 (150M19) carbon-manganese chemistry
  • EN19 (709M40) chromium-molybdenum chemistry
  • EN22 nickel-chromium-molybdenum chemistry
  • EN24 (817M40) nickel-chromium-molybdenum chemistry
  • S690
    S690QL1 high-yield quenched and tempered chemistry
Specification Group

Manganese-Vanadium High-Strength Cast Steel

1 grade
  • MN6V
    Manganese-alloy high-strength cast steel

Low-Alloy Cast Steels for Use at Elevated Temperatures

Specification Group

ASTM A217 / A217M Alloy Steel Castings for Pressure-Containing Parts

9 grades
  • ASTM A217 Grade C5
    BS 3100:1991 Grade B5
  • ASTM A217 Grade C12
  • ASTM A217 Grade C12A
  • ASTM A217 Grade WC1
    BS 3100:1991 Grade B1
  • ASTM A217 Grade WC4
  • ASTM A217 Grade WC5
  • ASTM A217 Grade WC6
    BS 3100:1991 Grade B2
  • ASTM A217 Grade WC9
    BS 3100:1991 Grade B3
  • ASTM A217 Grade WC11
Specification Group

ASTM A389 / A389M Specially Heat-Treated Alloy Steel Castings for High-Temperature Pressure Parts

2 grades
  • ASTM A389 Grade C23
  • ASTM A389 Grade C24
Specification Group

BS 3100:1991 Elevated-Temperature Grades

5 grades
  • BS 3100:1991 Grade B1
    ASTM A217 Grade WC1
  • BS 3100:1991 Grade B2
    ASTM A217 Grade WC6
  • BS 3100:1991 Grade B3
    ASTM A217 Grade WC9
  • BS 3100:1991 Grade B4
  • BS 3100:1991 Grade B5
    ASTM A217 Grade C5

Low-Alloy Cast Steels for Wear Involving Impact

Specification Group

L2A / BS 3100:1991 Grades BW2 and BW3

3 grades
  • L2A
  • BS 3100:1991 Grade BW2
  • BS 3100:1991 Grade BW3
Specification Group

L2B / BS 3100:1991 Grade BW4

2 grades
  • L2B
  • BS 3100:1991 Grade BW4
Specification Group

BS 3100:1991 Grade BW10

1 grade
  • BS 3100:1991 Grade BW10
Specification Group

H500 / AR500-Type Abrasion-Resistant Steel

1 grade
  • H500
    AR500-type wear-resistant chemistry and property family
    Cast to customer specification

Low-Temperature Steel Castings

Specification Group

ASTM A352 / A352M Ferritic and Martensitic Steel Castings for Low-Temperature Service

8 grades
  • ASTM A352 Grade CA6NM
  • ASTM A352 Grade LC1
  • ASTM A352 Grade LC2
  • ASTM A352 Grade LC2-1
  • ASTM A352 Grade LC3
  • ASTM A352 Grade LCA
  • ASTM A352 Grade LCB
  • ASTM A352 Grade LCC

Stainless & Heat-Resistant Cast Steels

Specification Group

Austenitic Stainless Steels

7 grades
  • ASTM A743 Grade CF-3 (304L / CF3)
  • ASTM A743 Grade CF-3M (316L / CF3M)
  • ASTM A743 Grade CF-8 (304 / CF8)
  • ASTM A743 Grade CF-8C (347SS / CF8C)
  • ASTM A743 Grade CF-8M (316 / CF8M)
  • ASTM A743 Grade CG-3M (317L / CG3M)
  • ASTM A743 Grade CG-8M (317 / CG8M)
Specification Group

High-Alloy Austenitic Stainless Steels

7 grades
  • 904L (UNS N08904)
    wrought/common chemistry reference; cast supply to customer specification
  • ASTM A743 Grade CF-20 (CF20)
  • ASTM A743 Grade CK-20 (310SS / CK20)
  • ASTM A743 Grade CN-3M (CN3M)
  • ASTM A743 Grade CN-7M (Alloy 20 / A20 / CN7M)
  • Nitronic 60 (UNS S21800)
    galling-resistant chromium-manganese austenitic
  • UNS N08028 Sanicro 28 (SAN28 / SN28)
Specification Group

Duplex Stainless Steels

8 grades
  • 2304 Duplex (UNS S32304 / SAF 2304)
    lean duplex; cast supply to customer specification
  • ASTM A890 Grade 1A (CD-4MCu / CD4MCu)
  • ASTM A890/A995 Grade 1B (CD4MCuN)
    cast counterpart / nearest cast grade to Ferralium® 255
  • ASTM A890/A995 Grade 2A (CE8MN)
  • ASTM A890/A995 Grade 3A (CD6MN / CD6N)
  • ASTM A890/A995 Grade 4A (CD3MN / 2205 / SAF 2205)
  • ASTM A890/A995 Grade 5A (CE3MN / 2507 / SAF 2507)
  • ASTM A890/A995 Grade 6A (CD3MWCuN / Zeron® 100)
Specification Group

Ferritic Stainless Steels

1 grade
  • ASTM A743 Grade CB-30 (CB30)
Specification Group

Martensitic Stainless Steels

7 grades
  • 440C (UNS S44004)
    high-carbon martensitic chromium stainless steel
  • ASTM A743 Grade CA-6NM (CA6NM)
    BS 3100:1991 Grade 425C12
  • ASTM A743 Grade CA-15 (CA15)
    BS 3100:1991 Grade 410C21
  • ASTM A743 Grade CA-15M (CA15M)
  • ASTM A743 Grade CA-40 (CA40 / 420SS)
    BS 3100:1991 Grade 420C29
  • X39Cr13 (Material 1.4031) martensitic chromium stainless
  • X39Cr14
    XCr14 martensitic chromium stainless
Specification Group

Precipitation Hardening Stainless Steels

2 grades
  • ASTM A747 Grade CB7Cu-1
    cast counterpart to 17-4 PH
  • ASTM A747 Grade CB7Cu-2
Specification Group

Heat-Resistant Cast Steels

13 grades
  • Grade HR1
    BS 3100:1991 Grade 309C35
    SABS 1465 Grade HRS1
    ASTM A297 Grade HH
    DIN 1.4837
  • Grade HR2
    BS 3100:1991 Grade 310C45
    SABS 1465 Grade HRS9
    ASTM A297 Grade HK
    DIN 1.4846
  • Grade HR3
    BS 3100:1991 Grade 309C40
    SABS 1465 Grade HRS5
    ASTM A297 Grade HE
  • Grade HR5
    SABS 1465 Grade HRS4
    ASTM A297 Grade HC
    DIN 1.4823
  • Grade HR6
    SABS 1465 Grade HRS4
    ASTM A297 Grade HC
    DIN 1.4823
  • Grade HR7
    BS 3100:1991 Grade 452C12
    SABS 1465 Grade HRS3
    DIN 1.4777
  • Grade HR8
    BS 3100:1991 Grade 330C12
    SABS 1465 Grade HRS12
    ASTM A297 Grade HT
    DIN 1.4864
  • Grade HR9
    BS 3100:1991 Grade 452C11
    SABS 1465 Grade HRS2
    DIN 1.4777
  • Grade HR10
    BS 3100:1991 Grade 452C11
    SABS 1465 Grade HRS2
    ASTM A297 Grade HC
    DIN 1.4776
  • Grade HR17
    BS 3100:1991 Grade 331C40
    SABS 1465 Grade HRS13
    ASTM A297 Grade HU
    DIN 1.4865
  • Grade HR30
    SABS 1465 Grade HRS10
    ASTM A297 Grade HL
  • Grade HR50
    DIN 2.4879
  • UMCO50
    DIN 2.4778

Nickel-Base Alloys

Specification Group

Nickel-Base Alloy Grades

7 grades
  • ASTM A494 Grade CW-5MC
    nickel-chromium-molybdenum cast alloy
  • ASTM A494 Grade CW-6MC
    UNS N26625
    cast alloy; comparable wrought/common alloy: Alloy 625 / UNS N06625
  • ASTM A494 Grade CW-6MW
    nickel-chromium-molybdenum-tungsten cast alloy
  • ASTM A494 Grade CW-6M
    Ni-Cr-Mo cast alloy; historically associated with Chlorimet 3 / modified Hastelloy C family
  • ASTM A494 Grade CW-12MW
    UNS N30002
    cast alloy; comparable wrought/common alloy: Hastelloy C-276 (Hast C) / UNS N10276
  • ASTM A494 Grade CY-40
    Ni-Cr-Fe cast alloy; comparable wrought/common alloy: Inconel 600
  • Inconel 657
    high-temperature nickel-chromium cast alloy; supply to customer casting specification

Material Enquiries & Unlisted Grades

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